Gypsum Recovered From Electricity Generation Offers Agricultural Benefits

Long-term research on agricultural use of flue-gas desulfurization gypsum, a byproduct of electricity generation from coal, shows its benefits as a soil amendment, reports the American Society of Agronomy. The recovered gypsum has a small and uniform particle size. Gypsum is calcium sulfate and provides both calcium and sulfur in plant-available forms. Additionally, it can counteract the effect of soluble aluminum in acidic soils. Researchers also say that adding gypsum improves soil structure and water percolation, and can reduce phosphorus movement out of the field. Using the recovered gypsum in agriculture reduces the need to mine gypsum, and also keeps a potential waste product out of landfills.